Doffing mechanism for combing and like machines.



No. 835,200. PATENTED NOV. 6, 1906. L; RAWLINSON.

DOFPING MECHANISM FOR GOMBING AND LIKE MACHINES. APPLIOATIORIILED mo.11, 1905.

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No- 835,200. PATBNTED NOV. 6, 1906.

L. RAWLINSON.

DOPFING MECHANISM FOR GOMBING ANDLIKE MACHINES. APPLICATION FILED 1120.11, 1905.

2 SHEETS-SHEET 2 UNITED STATES PATENT OFFICE.

LEVI RAWLINSON, OF PAWTUGKET. RHODE ISLAND,

.WHITIN MACHINE WORKS, OF

ASSIGNOR TO THE WVHITINSVILLE, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS.

DOFFING MECHANISM FOR COMBING AND LIKE MACHINES.

To aZZ whom it may concern:

Be it known that I, LEVI RAWLINSON, a

citizen of the United States, residing at Pawtucket, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Doffing Mechanisms for Combing and Like Machines,of which the following, taken in connection with the accompanyingdrawings, is a full, clear, and concise specification.

The present invention relates to oscillating doffer-combs which areadapted to be employed with cotton-combing or other machines to removethe fibers or waste from the doifing cylinder or other fiber conveyingmeans and discharge the same into the usual receptacle provided for thatpurpose; and the invention more particularly relates to the provision ofmeans for packing or crowding the fibers thus removed compactly into thereceptacle and for preventing the rising of such discharged fiber abovethe doffer-comb, where it would otherwise be likely to become entangledwith other moving parts and damage the machine.

The means whereby the present invention may be put into effect may forma structural part of the doffing mechanism, but is more preferablycomprised of a separate part in the form of an attachment, all as willbe hereinafter fully described, and more particularly pointed out in theaccompanying claims.

Referring to the drawings forming a part hereof I show my improveddoffing mechanism applied to a cotton-combing machine of the well-knownHeilmann type, and it will be understood that only such parts of thismachine are therein shown as are necessary to illustrate the relation ofmy invention thereto.

Figure 1 is a plan view of the essential parts of the dofiing mechanismof such a machine embodying my invention. Fig. 2 is a vertical sectionthrough one of the heads of such a machine, showing part of theframework in elevation and the doffing cylinder and doffer-comb insection. Fig. 3 is a detail illustrating a means of imparting the usualoscillatory movement to the doffercomb. Fig. 4 is an enlarged plan ofthe doflercomb mechanism and its rock-shaft with the central portionbroken away and also illustrating my invention. Fig. 5 is an end view ofFig. 4, and

Patented Nov. 6, 1906.

Fig. 6 is a plan view of a modified form of the present invention formedas a structural part I of the doffing mechanism.

In the usual operation of a combing-machine of the kind referred to thecombings or ,1 noils are removed from the combing-cylinr der (shown indotted lines at C, Fig. 2) by 1 means of the rotary brush 1 and aretaken off i from the latter by the usual needle or dofiing- I cylinder2. The doffer-comb 3, which may i be of any suitable formationappropriate for removing the fibers, oscillates through a E rather shortare close to the dotting-cylinder and removes the waste fiber therefromin the usual manner, discharging the same into a receptacle R. Thedoifer-comb is carried by the two side arms 4 on the longitudinalrockjustable by the bolt and slot shown in the drawings. The rock-shaftreceives its proper oscillatory movement from a crank-arm 6, carried atone end thereof and playing within a sleeve 7, which is pivotally hungon the face of a continuously-driven spur-gear 8, as clearly indicatedin Fig. 3. The usual means for driving this spur-gear are wellunderstood by persons familiar with this art, and are not, therefore,herein disclosed.

While the machine is in operation the doffercomb is constantlydischarging waste fiber into the receptacle R, and when the latterbecomes filled it should ordinarily be removed and replaced by another;but frequently it occurs that the attendant will neglect to remove thefull rece tacle, with the result that it becomes over lled and sometimesto such an extent that the waste fiber rising through the open spacebetween the doifer-comb and the rock-shaft becomes entangled with theneedles of the dofiing-cylinder and is carried thereby up under the tinbonnetJ and into other parts of the machine as for example, into thecombing-cylinder C where it is almost certain to cause serious damage.The present invention aims to safeguard the machine from injury fromthis source, as well as to increase the amount of waste or fiber thatmay be packed in the receptacle, by closing or substantially closing thespace which is between the rock-shaft and the comb or just to the rearof the comb. The means whereby this space may be closed may obviouslyassume a variety of forms. It

shaft 5, its attachment to the arms being ad- 4 may, for example, assumethe form of a single broad flat comb-supporting arm, as shown by 10 inFig. 6, substituted on the rock-shaft for the two side arms 4 4; but asthis structural formation of the space-closing means is likely to beinconvenient of application to existing machines, as well as of more orless expense in manufacture, my invention further contemplates theformation of such means as a partition or presser-plate 9, which may bemade from. sheet metal and readily attached to the dofl'er-comb or toits side arms. Such a plate is preferably formed with a hooked end 11,adapted to clasp or embrace the rockshaft 5, Figs. 2 and 5, and with oneor more depending flanges or ears 1 2, which form a means of attachmentof the plate to the side arms. The attachment may be convenientlyeffected by means of the bolts 13 (shown) and the washers 13, whichspace the flanges from the arms. The extent to which the presser-plateactually closes the space between the arms is not material, providedsaid plate will effectively obstruct the upward rising of the fiber, asabove described.

Having described my invention, what I claim, and desire to secure byUnited States Letters Patent, is

1. As an article of manufacture, an attachment for the oscillatingdofler combs of combing and like machines, comprising a presser memberand means for connecting the same with said doifer-comb, whereby it isoscillated thereby and serves to crowd the fiber downwardly.

2. As an article of manufacture, an attachment for the dofiing mechanismof combing and like machines, consisting of a plate or partition adaptedto be located between the supporting-arms of said doffer-comb and havingmeans for attaching it to said arms.

3. As an article of manufacture, an attach ment for the doffingmechanism of combing or like machines, consisting of a sheet-metal plateor partition adapted to fit in the space between the oscillatingdofi'er-comb and its supporting-arms, and having downwardlyturned lugsadapted to be secured to said arms.

4. As an article of manufacture, an attachment for the doffingmechanisms of combing or like machines, comprising a sheet-metal plateor partition having a rear margin adapted to embrace the doffer-combrockshaft and means for securing said plate in po sition between thedofi'er-comb-supporting arms.

5. In apparatus of the class described, a doffer-cylinder, and a comb toremove waste therefrom, a condenser to act upon and condense the wasteas it accumulates in the can, and means to detachably connect saidcondenser and the comb, to vibrate the condenser in unison with thecomb.

In testimony whereof I have signed my name to the specification in thepresence of two subscribing witnesses.

LEVI RAWLINSOW.

